\NeedsTeXFormat{LaTeX2e}[1995/06/01]

\ProvidesClass{cmam}[2010/05/18]
%
\RequirePackage{amsthm}
%
\DeclareOption{seceqnum}{%
   \AtEndOfPackage{%
   \makeatletter\@addtoreset{equation}{section}
   \renewcommand{\theequation}{\arabic{section}.\arabic{equation}}}}
\DeclareOption{eqnum}{%
   \AtEndOfPackage{%
   \renewcommand{\theequation}{\arabic{equation}}}}
\DeclareOption*{\PassOptionsToClass{\CurrentOption}{article}}
%
\ExecuteOptions{eqnum}
\ProcessOptions\relax
%
\LoadClass[12pt,a4paper,twoside]{article}
%
%
\AtBeginDocument{\label{firstpage}}
%
%    Issue publication info

%    \issueinfo{330}% volume number
%    {2}% issue number
%    {July}% month
%    {1995}% year
%
\def\@issuevol{}
\def\@issueno{}
\def\@issueyear{}
\def\issueinfo#1#2#3{%
  \gdef\@issuevol{#1}\def\@issueno{#2}%
  \gdef\@issueyear{#3}}
%
\setlength{\marginparpush}{0pt}
\setlength{\hoffset}{-1in}
\setlength{\voffset}{-1in}
\setlength{\marginparsep}{0pt}
\setlength{\marginparwidth}{0pt}
\setlength{\footskip}{0pt}
\setlength{\headheight}{5mm}%\baselineskip}
\setlength{\textwidth}{165mm}
\setlength{\oddsidemargin}{23mm}
\setlength{\evensidemargin}{22mm}
\setlength{\textheight}{688pt}
\setlength{\topmargin}{18.75mm}%-15pt}
%
\let\if@runhead\iftrue

\def\CMAM{{\sffamily CMAM}}
%
\let\if@smartand\iftrue
\newdimen\headlineindent             % dimension for space between
\headlineindent=1.166cm              % number and text of headings.
\newdimen\headerboxheight
\headerboxheight=80pt % 18 10.5dd-lines - 2\baselineskip
\newcounter{inst}
\newcounter{auth}
\def\authdepth{2}
\newdimen\instindent
\newbox{\authrun}
\newtoks\authorrunning
\newbox{\titrun}
\newtoks\titlerunning
\newbox\abstractbox
\def\emailname{E-mail}
\def\emailfont{\tt}
\def\authorfont{\bfseries}
\def\keywordsnamefont{\itshape}
\def\keywordsname{Keywords}
\def\subjclassnamefont{\itshape}
\def\subjclassname{2010 Mathematical subject classification}
\def\abstractnamefont{\itshape}
\def\abstractname{Abstract}
\def\subjclassbox
\def\@subjclass{}
\def\keywordsbox{}
\def\@keywords{}
\def\andname{and}
\def\lastand{, and}
\def\email#1{\emailname: {\emailfont #1}}
%
\def\ps@headings{%
    \let\@oddfoot\@empty\let\@evenfoot\@empty
    \def\@evenhead{\underline{\hbox to\textwidth{\small\csname runheadhook\endcsname
      \rlap{\thepage}\hfill\leftmark\unskip}}}%
    \def\@oddhead{\underline{\hbox to\textwidth{\small\csname runheadhook\endcsname
    \ignorespaces\rightmark\hfil\llap{\thepage}}}}%
    \let\@mkboth\@gobbletwo
    \let\sectionmark\@gobble
    \let\subsectionmark\@gobble
    }
\def\@dedic{}
\def\dedication#1{\gdef\@dedic{#1}}
\def\institute#1{\gdef\@institute{#1}}
\def\@thanks{}
\def\@fnsymbol#1{\ifcase#1\or\star\or{\star\star}\or{\star\star\star}%
  \or\dagger\or\ddagger\or %
  \mathchar "278\or\mathchar"27B\or\|\or **\or
  \dagger\dagger\or\ddagger\ddagger \else\@ctrerr\fi\relax
}
%
\def\nothanksmarks{\def\thanks##1{\protected@xdef\@thanks{\@thanks
      \protect\footnotetext[0]{\kern-\bibindent##1}}}} 
%
\def\ch@ckobl#1#2{\@ifundefined{@#1}
  {\typeout{CMAM warning: Missing 
      \expandafter\string\csname#1\endcsname}
         \csname #1 =\endcsname{#2}}
{}}
%
\def\ProcRunHead{%
  \def\\{\unskip\ \ignorespaces}%
  \def\thanks##1{\unskip{}}%
  \instindent=\textwidth
  \advance\instindent by-\headlineindent
  \if!\the\titlerunning!\else
    \edef\@title{\the\titlerunning}%
  \fi
  \global\setbox\titrun=\hbox{\small\rmfamily\itshape\unboldmath\ignorespaces\@title
    \unskip}%
  \ifdim\wd\titrun>\instindent
    \typeout{^^JCMAM warning: Title too long for running head.}%
    \typeout{Please, supply a shorter form with \string\titlerunning
      \space prior to \string\maketitle}%
    \global\setbox\titrun=\hbox{\small\rmfamily\itshape
      Title Suppresed Due to Expressive Length}
  \fi
  \xdef\@title{\copy\titrun}%
  %
  \if!\the\authorrunning!
  \else
     \setcounter{auth}{1}%
     \edef\@author{\the\authorrunning}%
  \fi
  \ifnum\value{inst}>\authdepth
     \def\stripauthor##1\and##2\endauthor{%
       \protected@xdef\@author{##1\unskip\if!##2!\else\ et al.\fi}}%
     \expandafter\stripauthor\@author\and\endauthor
  \else
     \gdef\and{\unskip, \ignorespaces}%
     {\def\and{\noexpand\protect\noexpand\and}%
       \protected@xdef\@author{\@author}}
  \fi
  \global\setbox\authrun=\hbox{\small\rmfamily\itshape\unboldmath\ignorespaces
    \@author\unskip}%
  \ifdim\wd\authrun>\instindent
     \typeout{^^JCMAM warning: Author name(s) too long for running head.
              ^^JPlease, supply a shorter form with \string\authorrunning
              \space prior to \string\maketitle}%
     \global\setbox\authrun=\hbox{\small\rmfamily\itshape Please, give a shorter
       version with: {\tt\string\authorrunning\space and
       \string\titlerunning\space prior to \string\maketitle}}%
  \fi
  \xdef\@author{\copy\authrun}
  \markboth{\@author}{\@title}
}
%
\let\orithanks=\thanks
\def\thanks#1{\ClassWarning{CMAM}{\string\thanks\space may only be used inside
  of \string\title, \string\author,\MessageBreak and \string\date\space prior
  to \string\maketitle}}
%
\def\maketitle{\par\let\thanks=\orithanks
\ch@ckobl{title}{A title should be given}
\ch@ckobl{author}{Name(s) and initial(s) of author(s) should be given}
\ch@ckobl{institute}{Address(es) of author(s) should be given}
\begingroup
%
    \renewcommand\thefootnote{\@fnsymbol\c@footnote}%
    \def\@makefnmark{$^{\@thefnmark}$}%
    \renewcommand\@makefntext[1]{%
    \noindent
    \hb@xt@\bibindent{\hss\@makefnmark\enspace}##1\vrule height0pt
    width0pt depth8pt}
%
 \def\lastand{\ifnum\value{inst}=2\relax
                 \unskip{} \andname\
              \else
                 \unskip, \andname\
              \fi}%
 \def\and{\stepcounter{auth}\relax
          \if@smartand
             \ifnum\value{auth}=\value{inst}%
                \lastand
             \else
                \unskip,
             \fi
          \else
             \unskip,
          \fi
}%
 \thispagestyle{empty}
 \ifnum \col@number=\@ne
   \@maketitle
 \else
   \twocolumn[\@maketitle]%
 \fi
%
 \global\@topnum\z@
 \if!\@thanks!\else
    \@thanks
\insert\footins{\vskip-3pt\hrule\@width\if@twocolumn\columnwidth
\else .5\textwidth\fi\vskip3pt}%
 \fi
 {\def\thanks##1{\unskip{}}%
 \def\iand{\\[5pt]\let\and=\nand}%
 \def\nand{\ifhmode\unskip\nobreak\fi\ $\cdot$ }%
 \let\and=\nand
 \def\at{\\\let\and=\iand}%
 \footnotetext[0]{\kern-\bibindent
 \ignorespaces\@institute}\vspace{5dd}}%
 \if@runhead
    \ProcRunHead
 \fi
%
 \endgroup
 \setcounter{footnote}{0}
 \global\let\thanks\relax
 \global\let\maketitle\relax
 \global\let\@maketitle\relax
 \global\let\@thanks\@empty
 \global\let\@author\@empty
 \global\let\@date\@empty
 \global\let\@title\@empty
 \global\let\@subtitle\@empty
 \global\let\title\relax
 \global\let\author\relax
 \global\let\date\relax
 \global\let\and\relax
}
\def\makeheadbox{{%
 \hbox to0pt{\vbox{\baselineskip=14dd\hbox 
        to\hsize{\kern3pt\vbox{\kern3pt
          \hbox{\small\bfseries\sffamily Computational Methods in Applied
            Mathematics}
          \hbox{\small Vol.~\@issuevol~(\@issueyear), No. \@issueno, 
            pp.~\pageref{firstpage}--\pageref{lastpage}}
          \hbox{\footnotesize\copyright~\@issueyear~~~Institute of Mathematics, National Academy of
            Sciences}
          \kern3pt}
        \hfil\kern3pt}
      }%
    \hss}%
}}
\def\abstract{\ifx\maketitle\relax
    \ClassWarning{\@classname}{Abstract should precede
      \protect\maketitle\space in CMAM document classes; reported}%
  \fi
  \global\setbox\abstractbox=\vtop \bgroup
    \begin{center}\begin{minipage}{.8\textwidth}
    \footnotesize {\abstractnamefont\abstractname}~---
    }
\def\endabstract{\\[3pt]  \@subjclass\\[3pt] \@keywords \end{minipage}\end{center}\egroup \ifx\@setabstract\relax
\@setabstracta \fi} 
\def\@setabstract{\@setabstracta \global\let\@setabstract\relax}
\def\@setabstracta{%
  \ifvoid\abstractbox
  \else
    \skip@20\p@ \advance\skip@-\lastskip
    \advance\skip@-\baselineskip \vskip\skip@
    \box\abstractbox
    \prevdepth\z@ % because \abstractbox is a vtop
  \fi
}
\def\subjclass#1{
  \gdef\@subjclass{\def\and{\unskip\nobreak;\ }
    \footnotesize {\subjclassnamefont\subjclassname}:~
        #1.}}
\def\keywords#1{
  \gdef\@keywords{\def\and{\unskip\nobreak;\ }
    \footnotesize {\keywordsnamefont\keywordsname:} #1.}}
%
\def\@maketitle{\newpage
\normalfont
\vbox to0pt{\if@twocolumn\vskip-39pt\else\vskip-49pt\fi
\nointerlineskip
\makeheadbox\vss}
\vskip19.5pt    % war 9pt
%
\if@twocolumn\else
 \gdef\footnoterule{%
  \kern-3\p@
  \hrule\@width.5\textwidth     % \columnwidth  \rubricwidth
  \kern2.6\p@}
\fi
%
 \setbox\authrun=\vbox\bgroup
     \if@twocolumn
        \hrule\@height10.5mm\@width0\p@
     \else
        \hrule\@height 2mm\@width0\p@
     \fi
    \nothanksmarks
    {\begin{center}\LARGE\bfseries
%     \noindent
     \ignorespaces
     \@title \end{center}}
    {\begin{center}\authorfont
    \setbox0=\vbox{\setcounter{auth}{1}\def\and{\stepcounter{auth} }%
                   \hfuzz=2\textwidth\def\thanks##1{}\@author}%
    \setcounter{footnote}{0}%
    \global\value{inst}=\value{auth}%
    \setcounter{auth}{1}%
%
\def\and{\unskip\nobreak\enskip{\boldmath$\cdot$}\enskip\ignorespaces}%
    \noindent\ignorespaces\@author%\vskip7.23pt
 \end{center}}
%
    \small
    \if!\@dedic!\else
       \par
       \normalsize\it
       \addvspace\baselineskip
       \centerline\@dedic
    \fi
        \@setabstract 
  \egroup % end of header box
 \@tempdima=\headerboxheight
 \advance\@tempdima by-\ht\authrun
 \unvbox\authrun
 \ifdim\@tempdima>0pt
    \vrule width0pt height\@tempdima\par
 \fi
 \global\@minipagetrue
 \global\everypar{\global\@minipagefalse\global\everypar{}}%
}
%
\def\section{\@startsection {section}{1}{\z@}%
                                   {-3.5ex \@plus -1ex \@minus -.2ex}%
                                   {2.3ex \@plus.2ex}%
                                   {\large\bfseries}}
\def\subsection{\@startsection{subsection}{2}{\z@}%
                                     {-3.25ex\@plus -1ex \@minus -.2ex}%
                                     {1.5ex \@plus .2ex}%
                                     {\normalsize\bfseries}}
\def\subsubsection{\@startsection{subsubsection}{3}{\z@}%
                                     {-3.25ex\@plus -1ex \@minus -.2ex}%
                                     {-1em}%
                                     {\normalfont\normalsize\bfseries\itshape}}
\def\paragraph{\@startsection{paragraph}{4}{\z@}%
                                    {3.25ex \@plus1ex \@minus.2ex}%
                                    {-1em}%
                                    {\normalfont\normalsize\itshape}}
\def\subparagraph{\@startsection{subparagraph}{5}{\parindent}%
                                       {3.25ex \@plus1ex \@minus .2ex}%
                                       {-1em}%
                                      {\normalfont\normalsize\sl}}

%
%
\long\def\@makecaption#1#2{%
  \vskip\abovecaptionskip
  \sbox\@tempboxa{\footnotesize {\bf #1.} #2}%
  \ifdim \wd\@tempboxa >\hsize
    {\footnotesize {\bf #1.} #2}\par
  \else
    \global \@minipagefalse
    \hb@xt@\hsize{\hfil\box\@tempboxa\hfil}%
  \fi
  \vskip\belowcaptionskip}
%
\renewenvironment{thebibliography}[1]
     {\section*{\noindent\refname
        \@mkboth{\MakeUppercase\refname}{\MakeUppercase\refname}}%
      \footnotesize
      \list{\@biblabel{\@arabic\c@enumiv}}%
           {\settowidth\labelwidth{\@biblabel{#1}}%
            \leftmargin\labelwidth
            \advance\leftmargin\labelsep
            \@openbib@code
            \usecounter{enumiv}%
            \let\p@enumiv\@empty
            \renewcommand\theenumiv{\@arabic\c@enumiv}}%
      \sloppy
      \clubpenalty4000
      \@clubpenalty \clubpenalty
      \widowpenalty4000%
      \sfcode`\.\@m}
     {\def\@noitemerr
       {\@latex@warning{Empty `thebibliography' environment}}%
      \endlist}
%
\newtheoremstyle{theorem}
{5pt}
{5pt}
{\itshape}
{\parindent}
{\bfseries}
{.}
{ }
{}
\newtheoremstyle{dfn}
{5pt}
{5pt}
{}
{\parindent}
{\bfseries}
{.}
{ }
{}
\newtheoremstyle{note}
{5pt}
{5pt}
{}
{\parindent}
{\itshape}
{.}
{ }
{}
%
\theoremstyle{theorem}
\newtheorem{theorem}{Theorem}[section]
\newtheorem{lemma}{Lemma}[section]
\newtheorem{prop}{Proposition}[section]
\newtheorem{cor}{Corollary}[section]
\newtheorem{assum}{Assumption}[section]
\newtheorem{lem}{Lemma}
\newtheorem{thm}{Theorem}
{\theoremstyle{dfn}
\newtheorem{dfn}{Definition}
\newtheorem{definition}{Definition}[section]
}

{\theoremstyle{note}
\newtheorem{remark}{Remark}[section]
\newtheorem{rem}{Remark}
\newtheorem{example}{Example}[section]
}
%
\DeclareRobustCommand{\qed}{%
  \ifmmode % if math mode, assume display: omit penalty etc.
  \else \leavevmode\unskip\penalty9999 \hbox{}\nobreak\hfill
  \fi
  \quad\hbox{\qedsymbol}}
%
\def\@addpunct#1{\ifnum\spacefactor>\@m \else#1\fi}
%
%\let\@newpf\proof \let\proof\relax \let\endproof\relax
\newenvironment{pf}{\@newpf[\indent\proofname]}{\qed\endtrivlist}
\newenvironment{pf*}[1]{\@newpf[\indent\proofname\hspace{-13pt}\indent#1]}{\qed\endtrivlist}
%
\renewcommand{\@seccntformat}[1]{%
\csname the#1\endcsname.\hspace{0.5em}}
%
\issueinfo{1}{1}{2001}
%
\def\receive#1{%
  \ifx\@empty\@receive \def\@receive{#1}%
  \else\g@addto@macro\@receive{\and#1}\fi}
%
\let\@receive=\@empty
\def\@setreceive{\par\begingroup
%  \addvspace{6\p@\@plus9\p@}%
  \hbox to\columnwidth{\hss\normalfont\footnotesize\it
    Received %
    \@receive}
  \endgroup
}
%
\def\revised#1{%
  \ifx\@empty\@revised \def\@revised{#1}%
  \else\g@addto@macro\@revised{\and#1}\fi}
%
\let\@revised=\@empty
\def\@setrevised{\par\begingroup
%  \addvspace{6\p@\@plus9\p@}%
  \hbox to\columnwidth{\hss\normalfont\footnotesize\it
    Revised %
    \@revised}
  \endgroup
}
\def\enddoc@text{\ifx\@empty\@receive \else\@setreceive\fi
\ifx\@empty\@revised \else\@setrevised\fi}
\AtEndDocument{\label{lastpage}\vskip20pt\raggedright\enddoc@text}

\pagestyle{headings}

\renewcommand{\le}{\leqslant}
\renewcommand{\ge}{\geqslant}
\renewcommand{\leq}{\leqslant}
\renewcommand{\geq}{\geqslant}
\endinput